EP 4108403 A4 20240320 - INTERNAL MOLD RELEASE AGENNT-CONTAINING FIBER-REINFORCED COMPOSITE MOLDED ARTICLE
Title (en)
INTERNAL MOLD RELEASE AGENNT-CONTAINING FIBER-REINFORCED COMPOSITE MOLDED ARTICLE
Title (de)
INNERE FORMTRENNMITTEL ENTHALTENDE FASERVERSTÄRKTE VERBUNDFORMTEILE
Title (fr)
ARTICLE MOULÉ COMPOSITE RENFORCÉ PAR DES FIBRES CONTENANT UN AGENT DE DÉMOULAGE INTERNE
Publication
Application
Priority
- JP 2020027995 A 20200221
- JP 2021004415 W 20210205
Abstract (en)
[origin: EP4108403A1] A fiber-reinforced composite molded article which is obtained by molding reinforcing fibers and an epoxy resin, while containing a silicone oil as an internal mold release agent, and which is characterized in that the fragment ion intensity ratio A/B as detected in case where the molded article surface is analyzed by time-of-flight secondary ion mass spectrometry is expressed by the relationship of 3 ≤ A/B ≤ 20. A: The intensity of a fragment ion that has the highest intensity among the fragment ions derived from the silicone oil. B: The intensity of a fragment ion that has the highest intensity among the fragment ions derived from the epoxy resin. A fiber-reinforced resin molded article according to the present invention is capable of achieving high productivity and high quality by effectively exhibiting releasability from a mold with a small addition amount of a mold release agent without using an external mold release agent, while being capable of exhibiting high adhesion to other members without requiring a special surface treatment such as sanding.
IPC 8 full level
B29B 15/08 (2006.01); B29C 70/18 (2006.01); B29C 70/40 (2006.01); C08K 5/541 (2006.01); C08K 7/02 (2006.01); C08L 101/00 (2006.01); B29K 101/10 (2006.01); B29K 105/08 (2006.01)
CPC (source: EP US)
B29C 33/64 (2013.01 - EP US); B29C 70/003 (2021.05 - EP); B29C 70/18 (2013.01 - US); B29K 2063/00 (2013.01 - EP US); B29K 2105/06 (2013.01 - EP); B29L 2007/002 (2013.01 - EP)
Citation (search report)
- [XA] WO 2019188020 A1 20191003 - TORAY INDUSTRIES [JP]
- [A] CN 107759816 A 20180306 - UNIV CHINA PETROLEUM EAST CHINA
- [A] JP 2017170793 A 20170928 - FUJIMORI KOGYO CO
- [A] JP 2020007458 A 20200116 - KOBAYASHI KK
- [AD] JP 2015151457 A 20150824 - SUMITOMO BAKELITE CO
- See also references of WO 2021166698A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 4108403 A1 20221228; EP 4108403 A4 20240320; CN 114845847 A 20220802; JP WO2021166698 A1 20210826; US 2023106971 A1 20230406; WO 2021166698 A1 20210826
DOCDB simple family (application)
EP 21756765 A 20210205; CN 202180007531 A 20210205; JP 2021004415 W 20210205; JP 2021507537 A 20210205; US 202117800404 A 20210205